diff --git a/public/css/gogs.css b/public/css/gogs.css
index 89ae347004..b799882352 100755
--- a/public/css/gogs.css
+++ b/public/css/gogs.css
@@ -651,7 +651,7 @@ html, body {
     overflow-y: hidden;
 }
 
-.file-content .file-body pre {
+.file-content .file-body.file-code pre {
     background-color: #FFF;
     border: none;
 }
diff --git a/public/css/markdown.css b/public/css/markdown.css
index fb9d667fb0..a810fa3ce7 100644
--- a/public/css/markdown.css
+++ b/public/css/markdown.css
@@ -112,6 +112,7 @@
   overflow: auto;
   background: #f8f8f8;
   border: 1px solid #ddd;
+  padding: 0;
 }
 
 .markdown > pre.linenums {
@@ -127,7 +128,7 @@
   margin-top: 2px;
 }
 
-.markdown > pre.linenums-style > ol.linenums {
+.markdown > pre.nums-style > ol.linenums {
   list-style-type: decimal;
   padding: 0 0 0 40px;
   -webkit-box-shadow: inset 40px 0 0 #f5f5f5, inset 41px 0 0 #ccc;
@@ -152,7 +153,7 @@
   padding-bottom: 12px;
 }
 
-.markdown > pre.linenums-style > ol.linenums > li {
+.markdown > pre.nums-style > ol.linenums > li {
   border-left: 1px solid #ddd;
 }
 
diff --git a/public/js/app.js b/public/js/app.js
index 9a5a0d68ad..a264fc94eb 100644
--- a/public/js/app.js
+++ b/public/js/app.js
@@ -68,7 +68,7 @@ var Gogits = {
     Gogits.renderMarkdown = function () {
         var $md = $('.markdown');
         var $pre = $md.find('pre > code').parent();
-        $pre.addClass('prettyprint');
+        $pre.addClass('prettyprint linenums');
         prettyPrint();
 
         var $lineNums = $pre.parent().siblings('.lines-num');